ATI LPN
PN ATI Comprehensive Predictor
1. What are the primary causes of respiratory acidosis?
- A. Hypoventilation and lung disease
- B. Hyperventilation and pneumonia
- C. Increased oxygen saturation and tachypnea
- D. Dehydration and hypoxia
Correct answer: A
Rationale: The correct answer is A: Hypoventilation and lung disease. Respiratory acidosis occurs when there is an accumulation of CO2 in the body due to inadequate ventilation. Hypoventilation, which reduces the elimination of CO2, and lung diseases that impair gas exchange are the primary causes. Choice B is incorrect because hyperventilation, not hypoventilation, leads to respiratory alkalosis, not acidosis. Choice C is incorrect because increased oxygen saturation and tachypnea do not directly cause respiratory acidosis. Choice D is incorrect as dehydration and hypoxia do not typically lead to respiratory acidosis.
2. Which of the following is an early indication that a tracheostomy client requires suctioning?
- A. Bradycardia
- B. Irritability
- C. Hypotension
- D. Decreased respiratory rate
Correct answer: B
Rationale: Irritability is indeed an early sign that a tracheostomy client may require suctioning. When a tracheostomy client becomes irritable, it can indicate that there is a need for suctioning to clear the airway. Bradycardia (choice A) refers to a slow heart rate and is not typically a direct indication for suctioning. Hypotension (choice C) indicates low blood pressure and is not specifically related to the need for suctioning. Decreased respiratory rate (choice D) can be a sign of respiratory distress, but irritability is a more direct and early indication of the need for suctioning in a tracheostomy client.
3. A nurse is caring for a client who is 1 day postoperative and is unable to ambulate. Which of the following actions should the nurse take to promote the client's venous return?
- A. Encourage deep breathing exercises
- B. Maintain the client in a supine position
- C. Apply a sequential compression device
- D. Massage the client's legs
Correct answer: C
Rationale: The correct answer is C: Apply a sequential compression device. Applying a sequential compression device promotes venous return by assisting with blood circulation in the lower extremities, reducing the risk of blood clots. Encouraging deep breathing exercises can help with lung expansion but does not directly promote venous return. Maintaining the client in a supine position may not be ideal for promoting venous return if the client is unable to move. Massaging the client's legs may be contraindicated postoperatively due to the risk of dislodging a clot or causing trauma to the surgical site.
4. A client has developed phlebitis at the IV site. What is the most appropriate next step?
- A. Apply a warm compress over the IV site
- B. Notify the provider and discontinue the IV infusion
- C. Increase the IV flow rate to clear the blockage
- D. Elevate the extremity and apply an ice pack
Correct answer: B
Rationale: Phlebitis, inflammation of a vein, is a complication that requires prompt action. The most appropriate next step is to discontinue the IV infusion and notify the healthcare provider. Applying a warm compress, increasing the IV flow rate, or applying an ice pack are not appropriate interventions for phlebitis. Warm compresses may worsen inflammation, increasing the IV flow rate could exacerbate the condition, and ice packs are not recommended for phlebitis.
5. A nurse is assessing a client who has right-sided heart failure. Which of the following findings should the nurse expect?
- A. Elevated blood glucose.
- B. Decreased urine output.
- C. Dependent edema.
- D. Jaundice.
Correct answer: C
Rationale: The correct answer is C: Dependent edema. In right-sided heart failure, the heart is unable to effectively pump blood to the lungs for oxygenation, leading to fluid accumulation in the systemic circulation. This fluid backs up in the venous system, causing increased pressure in the veins of the body, resulting in dependent edema, usually starting in the lower extremities. Elevated blood glucose (choice A) is not directly related to right-sided heart failure. Decreased urine output (choice B) may occur in conditions like acute kidney injury but is not a specific finding of right-sided heart failure. Jaundice (choice D) is more commonly associated with liver dysfunction, not typically seen in right-sided heart failure.
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